NRDelegation on Netacoding | Cybersecurity, Assembly & Network Research https://netacoding.com/tags/nrdelegation/ Recent content in NRDelegation on Netacoding | Cybersecurity, Assembly & Network Research Netacoding | Cybersecurity, Assembly & Network Research https://netacoding.com/img/logo-netacoding.png https://netacoding.com/img/logo-netacoding.png Hugo en-us Mon, 11 May 2026 00:00:00 +0000 DNS State Exhaustion: Water Torture, NXNS Amplification, TsuNAME & DoT/DoH Socket Starvation https://netacoding.com/posts/dns-state-exhaustion/ Mon, 11 May 2026 00:00:00 +0000 https://netacoding.com/posts/dns-state-exhaustion/ DNS resolvers carry exhaustible per-query state: recursive-client tables, pending-query slots, TCP/853 DoT and TCP/443 DoH sockets, delegation chains, and DNSSEC validation trees. Covers slow water torture, NXNS amplification (CVE-2020-8616), TsuNAME cyclic delegation, NRDelegation, and why BIND9/Unbound default ceilings are lower than HTTP.